CN1074780A - Small current single turn core type current transformer - Google Patents
Small current single turn core type current transformer Download PDFInfo
- Publication number
- CN1074780A CN1074780A CN 92106815 CN92106815A CN1074780A CN 1074780 A CN1074780 A CN 1074780A CN 92106815 CN92106815 CN 92106815 CN 92106815 A CN92106815 A CN 92106815A CN 1074780 A CN1074780 A CN 1074780A
- Authority
- CN
- China
- Prior art keywords
- coil
- electricity
- current transformer
- wound
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
A kind of small current single turn core type instrument transformer, it is made of iron core and coil.It is characterized in that having a plurality of iron cores that are wound with coil respectively superimposed, the head end of each coil and tail end electricity in parallel respectively connects, and output, head end and tail end are arranged after electricity connects.
Description
The technology of the present invention field belongs to AC current transformer.
The present current transformer that uses in the world, high pressure is at 200/5A and following, and low pressure all is the multiturn number at the 150/5A and the following primary current punching number of turn.In order to improve accuracy class, all be to adopt the instrument transformer diameter of bore is reduced, the method that reduces magnetic leakage realizes.Both of these case is given to install and use and is made troubles, especially make under the condition of primary winding a lot of situations and can not use for Chinese patent utility model communique disclosed " small-sized extraordinary current transformer " for installing and using copper, aluminium sheet, its scope of application is narrow, can not extensively promote the use of.
The purpose of this invention is to provide that a kind of volume is little, precision high energy different situations next time the punching number of turn of electric current be 1 circle precision all at the small current single turn core type current transformer more than 0.5 grade.
The present invention is realized by following mode: it is superimposed by a plurality of iron cores that are wound with coil respectively, and the head end of each coil and tail end electricity in parallel respectively connects, and output head end K is arranged after electricity connects
1With tail end K
2The iron core that is wound with coil has more than 2 or 2.The several superimposed iron cores and the initial and end end electricity in parallel respectively of coil connect, and leave to become whole behind the pair of output head.Superimposed with two iron cores, the coil of each iron core is wound with enamelled wire 78～80 circles, and then electricity in parallel connects.Superimposed with two iron cores, the coil of each iron core is wound with enamelled wire 38～40 circles, and then electricity in parallel connects.Superimposed with three iron cores, the coil of each iron core is wound with enamelled wire 28～30 circles, and then electricity in parallel connects.Superimposed with four iron cores, the coil of each iron core is wound with color painting wire 30～32 circles, and electricity in parallel then connects.
It is little that the present invention has a volume, precision height, easy to use, and characteristics such as material consumption is few, and the scope of application is wide are suitable for voltage below 500,000 volts, and electric current is made measurement and used for relay protection when the following condition of 200 peaces.Can be widely used in the power plant, circuit arrangements such as switch cubicle in the transmission of electricity of change, power distribution station and big-and-middle-sized factory and enterprise, the electric power system and protection screen.
Fig. 1 is a structural representation of the present invention
Fig. 2 is single iron core and coil schematic diagram
Below in conjunction with accompanying drawing the present invention is described in further detail: high-tension current inductor 200/5A and following product and low-voltage current mutual inductor 100/5A and following product, the primary current number of turn be a circle be to take above mutual inductor coil (2) electricity in parallel of two separate units to connect, each coil (2) has single iron core (1), its precision reaches 0.5 grade, when adopting two iron cores, each iron core (1) is gone up around 79.5 circle coils (2), and then electricity in parallel connects, and just having become the 200/5A precision is 0.5 grade current transformer.When adopting two iron cores (1), around 39.5 circle coils (2), and then electricity in parallel connects on each iron core, and just having become the 100/5A precision is 0.5 grade current transformer; As adopt three iron cores (1), on each iron core around 29.5 circle coils (2), after connecing, electricity in parallel just becomes the current transformer of 0.5 grade of 50/5A precision, present embodiment uses four iron cores (1) superimposed as shown in Figure 1, coil (2) on each iron core (1) is 31.5 circle enamelled wires, and electricity in parallel connects that just to have become the 40/5A precision be 0.5 grade current transformer.With increase separate unit iron core (1) quantity and change on each iron core (1) enamelled wire around the number of turn, promptly change the enamelled wire number of turn of coil (2), then can obtain a series of different current parameters current transformer, its precision is all more than 0.5 grade, owing to adopt a plurality of coils (2) electricity in parallel to connect, the gross thickness of four coils (2) of embodiment only increases by 1/3 than an original coil current instrument transformer, because of secondary current is 5A, the line of enamelled wire directly directly reduces 3/4 than the enamelled wire line of conventional similar current transformer, so save copper material greatly.And hole dimension does not reduce in the current transformer of the present invention, has guaranteed use copper, and aluminium sheet can pass the instrument transformer endoporus when doing the primary current input smoothly, has made things convenient for use, has enlarged the scope of application.
Claims (7)
1, a kind of small current single turn core type current transformer, it is made of iron core and coil, it is characterized in that having a plurality of iron cores (1) that are wound with coil (2) respectively superimposed, and head end of each coil (2) and tail end electricity in parallel respectively connects, and output head end K is arranged after electricity connects
1With tail end K
2
2, according to the described current transformer of claim 1, it is characterized in that the several superimposed iron cores (1) and the initial and end end electricity in parallel respectively of coil (2) connect, leave and become whole behind the pair of output head.
3, according to the described current transformer of claim 1, the iron core (1) that it is characterized in that being wound with coil (2) has more than 2 or 2.
4, current transformer according to claim 2 is characterized in that with two iron cores (1) superimposedly, and the coil (2) of each iron core (1) is wound with enamelled wire 78～80 circles, and then electricity in parallel connects.
5, current transformer according to claim 2 is characterized in that with two iron cores (1) superimposedly, and the coil (2) of each iron core (1) is wound with enamelled wire 38～40 circles, and then electricity in parallel connects.
6, current transformer according to claim 2 is characterized in that with three iron cores (1) superimposedly, and the coil (2) of each iron core (1) is wound with enamelled wire 28～30 circles, and then electricity in parallel connects.
7, current transformer according to claim 2 is characterized in that with four iron cores (1) superimposedly, and the coil (2) of each iron core (1) is wound with enamelled wire 30～32 circles, and electricity in parallel then connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106815 CN1074780A (en) | 1992-01-24 | 1992-01-24 | Small current single turn core type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106815 CN1074780A (en) | 1992-01-24 | 1992-01-24 | Small current single turn core type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1074780A true CN1074780A (en) | 1993-07-28 |
Family
ID=4942447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106815 Pending CN1074780A (en) | 1992-01-24 | 1992-01-24 | Small current single turn core type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074780A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915247A (en) * | 2014-04-25 | 2014-07-09 | 江苏科兴电器有限公司 | Single-turn high-precision current transformer |
| CN108630419A (en) * | 2018-06-04 | 2018-10-09 | 湖北大二互科技股份有限公司 | Combined complete formula current transformer |
-
1992
- 1992-01-24 CN CN 92106815 patent/CN1074780A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915247A (en) * | 2014-04-25 | 2014-07-09 | 江苏科兴电器有限公司 | Single-turn high-precision current transformer |
| CN108630419A (en) * | 2018-06-04 | 2018-10-09 | 湖北大二互科技股份有限公司 | Combined complete formula current transformer |
| CN108630419B (en) * | 2018-06-04 | 2023-09-05 | 湖北大二互科技股份有限公司 | Combined sleeve type current transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102035361B (en) | Voltage regulation device | |
| CN112735795B (en) | Standard three-phase combined mutual inductor | |
| CN1074780A (en) | Small current single turn core type current transformer | |
| CN2137020Y (en) | Trickle single-turn feedthrough current transformer | |
| CN207116212U (en) | A kind of current transformer of polytropic ratio | |
| CN106783146A (en) | A kind of photovoltaic transformer annular core founds winding technologe | |
| CN103295753B (en) | Large-span high-precision composite-transformacurrenttio currenttio transformer and manufacture method | |
| CN201869105U (en) | Voltage regulator | |
| CN205050681U (en) | Frequency conversion testing transformer | |
| CN215772922U (en) | Multi-output power supply adopting matrix transformer | |
| CN220475464U (en) | Capacitor voltage division type high-voltage side online energy taking and supplying device | |
| CN116798752B (en) | Vehicle-mounted transformer for testing of convertible coupling group and use method | |
| CN216212817U (en) | Single-coil double-voltage dry-type distribution transformer | |
| CN2497412Y (en) | Add-subtract type voltage regulator | |
| CN2140600Y (en) | Energy saving transformer for high voltage neon lamp | |
| TW366620B (en) | In-line buck/boost voltage-regulation systems and apparatus | |
| CN207781373U (en) | Miniature transformer | |
| CN2135822Y (en) | Single-phase adjustable transformer | |
| CN2296558Y (en) | One terminal connecting zero line output auto neon lamp transformer | |
| CN213303880U (en) | Automatic regulator for line voltage | |
| CN2299381Y (en) | Neon lamp transformer with one-end earthing output | |
| CN2353025Y (en) | Large current mutual inductor | |
| CN2492935Y (en) | Low-voltage inductive electric appliance with capacitve compensation | |
| CN2556847Y (en) | Energy-saving commutating charger | |
| CN205959742U (en) | Transformer bobbin and transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |